Question: which position Chiang Kai-shek holds and when did he select?
Paraphrase: which function Chiang Kai-shek holds and when did he select?
SPARQL (Wikidata): SELECT ?value1 ?obj WHERE { wd:Q16574 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P2715 ?value1 . }